import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.Comparator;

class Student{
    public String name;
    public int age;
    public int score;

    public Student(String name, int age, int score) {
        this.name = name;
        this.age = age;
        this.score = score;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", score=" + score +
                '}';
    }
}

class AgeComparator implements Comparator<Student> {
    @Override
    public int compare(Student o1, Student o2) {
        return o1.age - o2.age;
    }
}
class ScoreComparator implements Comparator<Student>{
    @Override
    public int compare(Student o1, Student o2) {
        return o1.score - o2.score;//减数交换改变排列顺序
    }
}
class NameComparator implements Comparator<Student>{
    @Override
    public int compare(Student o1, Student o2) {
        return o1.name.compareTo(o2.name);
    }
}

public class Test {
    public static void main(String[] args) {
        Student[] students = new Student[3];
        students[0] = new Student("zhangsan", 19, 10);
        students[1] = new Student("lisi", 24, 59);
        students[2] = new Student("wangwu", 30, 69);
        AgeComparator ageComparator = new AgeComparator();//比较器
        ScoreComparator scoreComparator = new ScoreComparator();
        NameComparator nameComparator = new NameComparator();

//        Arrays.sort(students,ageComparator);
//        Arrays.sort(students,scoreComparator);
        Arrays.sort(students,nameComparator);
        System.out.println(Arrays.toString(students));
    }
    public static void main1(String[] args) {//对这个数组排序怎么排？
        Student[] students = new Student[3];
        students[0] = new Student("zhangsan", 19, 10);
        students[1] = new Student("lisi", 24, 59);
        students[2] = new Student("wangwu", 30, 69);
        Arrays.sort(students);
        System.out.println(Arrays.toString(students));

    }
}

